py3 C C++階乘模運算速解Leetcode 3577 Count the Number of Computer Unlocking Pe...

py3 C C++階乘模運算速解Leetcode 3577  Count the Number of Computer Unlocking Permutations

[1-liner Py3請進]

[codes on Leetcode]https://leetcode.com/problems/count-the-number-of-computer-unlocking-permutations/solutions/7403543/do-what-the-hint-saysbeats-100-by-anwend-i427/

class Solution:
    def countPermutations(self, x: List[int]) -> int:
        return 0 if x[0]>=min(x[1:]) else factorial(len(x)-1)%(10**9+7)